hi Ola,
Thanks for pointing that out. We will add that with our next revision.
The Pinout is:
pin 1 (left) = DMX data-
pin 2 = DMX data+
pin 3 = DMX GND
pin 4 = RS-232 RX
pin 5 = RS-232 TX
pin 6 = RS-232 GND
This information can also be found on the label on the bottom of the IoCore unit.